William a



' my machine.

NITED STATES PATENT OFFICE.

XVILLIAM A. PALMER, OF ROME, GEORGIA.

SHEARING, PUNCHING, AND RIVETING MACHINE.

STECIFIGATION forming'part of Letters Patent No. 284,054, dated August28, 1883.

\ Application 'filcd April 9, 1883. (No model.) i

To all whom it may concern Be it known that 1, WILLIAM A. PALMER, acitizen of the United States, residing at Rome, in the county of Floydand State of Georgia, have invented certain new and useful Improvementsin Shearing, Punching, and Riveting Machines; and I do declare thefollow ing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters or figures of reference marked thereon, which form a partof this specification.

Figure 1 of the drawings is a front view of Fig. 2 is a side view, andFig. 3 is a horizontal sectional view, of the same.

This invention has relation to machines for shearing, punching, andriveting bale -ties,

iron hoops, and the like; and it consists in the" construction and novelarrangement of devices hereinafter fully described, and particularlypointed out in the claims appended.

The main object of the invention is to cause the rivet itself to formthe punch, which is effected by providing the lower die with a seat tohold the head of the rivet in position, and in providing the female die,which also constitutes the hammer, with an exit for the es cape of themetal displaced by the rivet during the operation. of punching themetal. The shearingmechanism and the arrangement for feeding the rivetsto the seat in the lower die are also of great importance, and referencewill now be made by letter to the drawings, in order that those skilledin the art to which the invention pertains maybe enabled to constructand use the same.

a designates the table, bench, or other foundation upon which themachine is mounted, and this may be constructed in any convenientmanner.

b designates the base of the machine, preferably rectangular in form,and of cast or wrought iron, having a central rectangular vertical slot,0, through which the shank or stem (1 of the female-die carrier eworksvertically between standards ff, secured to or rising from the base I),and between which standards is pivoted the weighted cam-lever g. Belowthe shank d a spring, 71, is placed, which is intended to return theshank d and its adjuncts to their normal position after operating thecam-lever to shear or punch the metal to form the ties or hoops. The'male die t is secured to the top of the base, as shown, and is providednear one end with a recess or seat, k, in its face for the reception ofthe head of the rivet. The plain portion Z of this male die 2 is to beused as an anvil to upset the rivet after it has been used to punch theholes through the ends of the overlapped pieces to be united. This dieit is removable, and is held in its seat by a set-screw, m, so that whenworn out by use it may be readily replaced by a new one. One of the armsf is provided with a vertical recess, a, in which aspring, 0, con

nected at its lower end to a pivoted lever, 19,

is secured, to return thesaid lever 19, which is designed, to feed therivets to the seat in the male die 17, to its normal position. Therivets are to be placed by hand on the table or plate tical recess, 15,conforming to the shape of the shank of the rivet, and a curved openingor exit leading out therefrom at one side of the die 1, through whichthe metal displaced by the rivet escapes, and thereby keeps the femaledie always in .condition automatically. The face of the female dieextends overthe anvil portion of the male die, so that by operating thelever the rivet, after it has punched the lapped straps to be connected,can be sh ifted and the rivet upset. Between the arm f, opposite the oneprovided with the spring for controlling the feed-leve1', and the shankd is pivoted a vertical keeper, a, for holding the metal strips in placewhile being punched and riveted, said keeper swinging automatically toplace after the lapped metal strips have been placed above the male dieor upon the rivet.

The shearing mechanism is quite simple and easily operated. One of theblades, '0, is seto one of the standards f, and the other blade issecured in a recess, made in the vertical face of the head 8 of thedie-carrier neXt to the standard to which the arm is secured. This arm wis located near to the head 3 when the latter is in its normal position,and consequently buta small stroke of the cam-lever is required to shearthe straps.

The cam-lever g is pivoted between the uprights f, near their upperends, by means of a transverse bolt, :4, and -is provided with a weight,x, at the end of an arm, 00, whereby it is located eccentrically to thefulcrum of the lever g, and thereby assists the operator in elevatingthe female die. It is of course obvious that two persons are required toma nipulate the machine-oneto feed the metal strips and rivets to thedies and one to operate the cam-lever. The fact, however, that noprevious punching of the metal is required before the insertion of therivets, is of sufficient importance, aside from the fact that a simpleshifting of the strips and inserted rivet enables the rivet to be upset,and the tie or hoop to be connected at the lap and thus completed.

The rivets maybe fed to the seat in the male die by hand; but the use ofthe feed-lever is preferable on account of its certainty and rapidity. IHaving thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The herein-described process of punching and riveting lapped metalstrips, consisting of first inserting the rivet by seating it in arecess in a lower die, then placing the strips to be punched upon thepoint of the rivet and forcing a female die down upon the strips tocause the rivet to penetrate the metal, and then shifting the strips andrivet horizontally to the 40 anvil of the male die, and then upsettingthe rivet by a hammer forming a part of the female die, substantially asspecified.

2. In a punching and riveting machine, a

pivoted swinging keeper placed above the an- 4 5 vil and at the side ofthe hammer, for holding the metal upon the anvil or the rivet-point,substantially as specified.

' .3. Theeombination, with the male die provided with the recess forseating the rivet, and

the anvil for receiving the same during operation, of the feed-lever p,pivoted to the table or plate q, and the spring 0, seated in the re cessn of one of the uprights f, substantially as specified.

4. The metal shearing, punching, and riveting machine herein described,consisting of the base I), provided with a central rectangular opening,and uprights or standards f f, the spring h beneath said opening, theremovable dies 13 and 1', operating lever g, arm w and head 8, carryingcutters 1" and v, the swinging keeper u, and anvil Z, all constructed,combined, and adapted to operate substantially as specified.

5. The combination, with a lower die having a recess to seat arivet-head, of an upper die and mechanism to cause the same to bebrought down forcibly upon the metal strips, to cause the rivet to punchits own way through the lapped ends or edges thereof that are to beriveted together, substantially as specified.

In testimony whereof I affiX my signature in presence of two witnesses.

XVM. A. PALMER. WVitnesses:

THEo. MUNGEN, PHILIP O. MASI.

